Blade stropping device



May 5, 1942.

BLADE STROPPING DEVICE Filed March 25, 1941 .infill/Mm Patented May 5, 1942 2,281,953 BLADE STROPPING .DEVICE Willard Reid,

New York, N. Y.,

assignor to Magazine Repeating Razor Company, New York, N. Y., a corporation of New Jersey Application March 25, 1941, Serial No. 385,041

5 Claims.

The invention relates to implements that may serve as holders for stropping safety razor blades and for injecting blades into safety razors of the magazine type and ejecting worn blades therefrom.

The object is a device of that character that will hold the blade rmly in place during stropping and which may also be used to inject the stropped blade into a razor head directly from its position in the holder, at the same time causing the ejection of a blade (if any) already in the head.

Referring to the drawing:

Fig. 1 is a top plan View of the implement;

Fig. 2 is a view in side elevation;

Fig. 3 is a view ofthe left end of Fig. 2;

Fig. 4 is a view similar to Fig. 3 but in another operating position;

Fig. 5 is a View on the line 5-5 of Fig. 1;

Fig. 6 is a view on the line 6--6 of Fig. 1;

Fig. 'l is a view on the line 1-1 of Fig. 1;

Fig. 8 is a perspective View showing the parts in position preparatory to injecting a blade into a razor head;

Fig. 9 shows a modification.

Referring more in detail to the drawing, the operative parts are mounted on or carried by a hollow shank I which terminates at one end (right end in Fig. 1) in an enlarged portion II,

the bore I2 of the shank being correspondingly enlarged as shown at I3. Within the bore I2 is rotatably and slidably located a shaft I4 which terminates at one end in a finger I projecting at right angles from it, the purpose of which will be presently explained. The other end of the shaft enters a bushing I6 rotatably mounted in the enlarged bore I3 and terminating in a knob I1 whereby the bushing may be rotated by the thumb and finger of the operator. The connection between the shaft I4 and the bushing I6 is effected by the pin I8 entering the helical groove I9 in the shaft. This groove extends about onequarter way round the shaft, and within the limits of its angular scope the shaft is rotatable in the bushing. The purpose of this construction will likewise be presently explained. Endwise motion of the bushing I6 in the enlarged portion II of the shank is prevented by crimping over the rim of the enlarged portion as shown at Ilia.

A blade clamp composed of the two clamping jaws 20 and 2I extends laterally from the hollow shank I0, these jaws being, if desired, of spring material and normally capable of exerting a slight resilient pressure on a blade A positioned between them. For use with narrow blades a blade seat 22 may be inserted in the slot which serves as a backing for the blade. Need for this blade seat or a blade seat of different `dimensions dependsupon the width of the blade to be used with the implemen However, as will appear, it is best that the edge of the blade be extended a considerable distance from the hollow shaft I0 and in the case of narrow blades--say blades in the neighborhood of .315 in width--such a seat is desirable.

Extending from the lower clamp 2l is an aligning finger 23, the plane of which is normal to the planeof the blade in the slot and therefore the material of the finger is shaped into a bracket 24 to effect this purpose.

When it is desired to strop a blade, the blade is inserted between clamping jaws, and the knob I1 is turned as far as it will go in the direction of the arrow 24a (Fig. 2) which causes the nger I5 to be rotated into position as shown in Fig. 1, whereby it serves as a closure for one of the open ends of the blade clamp slot. Its limit of motion in this direction is reached .when it conbracket 24.

" At the same time there is a camming action between the thread I9 and the pin I8 which draws the closure finger I5 closely against the end of the blade, which is thereby firmly held between which will be presently referred to.

stropping the blade, the clamping jaws the blade firmly andthe finger preventing the blade from being dragged endwise toward the finger.

Closure of the opposite end of the slot is effected by the plunger 25 which is connected to the sleeve 26 but offset from it, the sleeve 29 being slidably mounted on the hollow shaft I0. Preferably the plunger 25 is long enough so that, when the sleeve is retracted as far as it can go (as shown in Fig. l), the tip end of the plunger lies between the clamping jaws preventing rotation of the sleeve- 26.

The plunger 25 also serves another purposeviz., that of injecting a blade, such as the blade A, into a razor-such, for example, as is illustrated in United States Patents to Rodrigues, No. 1,965,945, issued August 14, 1934; Hilliard, No. 2,221,379, issued November 12, 1940; and Morris, No. 2,203,837, issued June 11, 1940. The razors of all these patents have the common characteristic of a separate magazine provided with a finger for projecting into' the razor head in order to align the blade ejection orifice of the magazine with the blade retaining passage in the of the type referred to.

Of course the positional relationship between the linger and the blade clamping slot, and the dimensions would be co-ordinated to suit the particular razor with which the implement is to be used.

to provide the shank l which co-operates with a, key 28 on Y the shaft end of the blade clamping slot is covered, rotation of the knob l positive means of Where along the shank.

Fig. 9 shows the device adapted simply for stropping; in other words, it is similar to Fig. 1

aligning nger.

I have described above of y invention, but I wish 1t to be understood senese 2. An implement adapted to serve as a holder for strapping a razor blade and means for rotating the shaft and causing it to slide in the bore of the shank.

WILLARD REID. 

